I opened Media Manager and moved the file into the documents folder on the device memory. I also tried putting the file in the documents folder on the SD card. However when I go to Load File in the gflash menu, it says "Sorry there are no media files to choose from. Please consult our help documentation."

I am running a new OS, could that be the problem? I installed the gwhiz version for 4.3, which was the newest one.